Comment by pierrec

Well done. According to the author's Patreon, this is his first article that's "Paid for by patrons" though no details are given. His Patreon is set up so that donations happen whenever he publishes a new article. I guess the advantage over recurring donations is that it doesn't pressure him to crank out content - he can just do it on his own schedule, and donations are always justified.

https://www.patreon.com/ciechanowski